CN108881511A - A kind of homogeneous network communication means - Google Patents
A kind of homogeneous network communication means Download PDFInfo
- Publication number
- CN108881511A CN108881511A CN201810592915.4A CN201810592915A CN108881511A CN 108881511 A CN108881511 A CN 108881511A CN 201810592915 A CN201810592915 A CN 201810592915A CN 108881511 A CN108881511 A CN 108881511A
- Authority
- CN
- China
- Prior art keywords
- cabin unit
- etbn
- address
- message
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
Abstract
The present invention provides a kind of homogeneous network communication means, including：S1. the connection relationship between the multiple cabin unit ETBN of train is calculated using IEC61375-2-5 agreement, distributes network segment；S2. the communication equipment of cabin unit A sends DNS request message to its ETBN, requests the global ip address of purpose cabin unit B；S3.ETBN gives feedback；S4. cabin unit A sends IP packet to its ETBN, and source IP is private network IP address, and destination IP is the global ip address of the communication equipment of cabin unit B；S5. after the ETBN of cabin unit A receives message, NAT address conversion is carried out, and the message after conversion is sent to the ETBN of cabin unit B；S6. after the ETBN of cabin unit B receives message, NAT address conversion is carried out, cabin unit B is sent to；S7. the communication equipment of cabin unit B receives message.The present invention calculates global ip address using the method for train absolute position, greatlies simplify access rule, and carry out communication optimization.
Description
Technical field
The present invention relates to train communication technical fields, more particularly, to a kind of homogeneous network communication means.
Background technique
Currently, the modern means of communication (such as high-speed rail train) are usually spliced by multiple cabin units, each train institute
The quantity for the cabin unit for including can be adjusted flexibly according to actual needs.The factory configuration of each cabin unit is identical
, from the point of view of producing angle, production difficulty can be reduced in this way, reduce production configuration difficulty；From the point of view of safeguarding angle, train is made
For the rapid wear facility that high intensity uses, scene can be extremely important with independent maintenance or replacement, the factory configuration of each cabin unit
It is identical, the difficulty of some in field replaceable train or several cabin units can be greatly lowered, to reduce overall maintenance
Cost.Realize above-mentioned target, it is desirable that each cabin unit terminal inside train must map to a virtual global I P
(Internet Protocol, the agreement interconnected between network) address.
IEC61375 protocol suite defines basic Train Communication Network, describes train Topology Discovery Protocol and DNS
(Domain Name System, domain name system) domain name specification, the method for recommending two kinds of mapping global ip address：One is logical
DHCP (Dynamic Host Configuration Protocol, dynamic host configuration protocol) mode is crossed, according to train topology
Variation dynamically distributes global ip address to terminal；One is be ginseng by the spacing distance between access terminal and accessed terminal
The virtual global I P mapping mechanism that number calculates.The shortcomings that first method is for the more demanding of terminal, and major part is whole at present
Dynamic DHCP mode configuration of IP is not supported in end；The shortcomings that second method is that the access rule between terminal is complicated, needs basis
Relative position calculates global ip address.
The information disclosed in the background technology section is intended only to deepen understanding of the general background technology to the present invention, and
It is not construed as recognizing or implying in any form that the information constitutes the prior art known to those skilled in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of homogeneous network communication means, to solve in train existing in the prior art
Configure the technical problem of identical cabin unit access rule complexity in network communication.
In order to solve the above technical problems, a kind of homogeneous network communication means provided by the invention, the communication means include：
S1. multiple cabin unit ETBN (the Ethernet Train of train are calculated using IEC61375-2-5 agreement
Backbone Node, Ethernet train backbone network node) between connection relationship, according to calculated result, so that each ETBN is successively
It arranges and distributes network segment；
S2. wherein the communication equipment of cabin unit A requests purpose cabin unit B's to its ETBN transmission DNS request message
The global ip address of communication equipment includes in the global ip address：The network segment of the ETBN of cabin unit B and cabin unit B's
The host bit of communication equipment；
S3.ETBN feeds back the global ip address of the communication equipment of cabin unit B；
S4. the communication equipment of cabin unit A sends IP packet to its ETBN, and source IP is the private network IP of the communication equipment
Location, destination IP are the global ip address of the communication equipment of cabin unit B；
S5. after the ETBN of cabin unit A receives message, NAT (Network Address Translation, net are carried out
Network address conversion) source IP of message, is revised as the global ip address of the communication equipment of cabin unit B, destination IP by address conversion
It remains unchanged, and the message after conversion is sent to the ETBN of cabin unit B；
S6. after the ETBN of cabin unit B receives message, NAT address conversion is carried out, the destination IP of message is revised as vehicle
The private network IP address of the communication equipment of compartment unit B, source IP remain unchanged, and the message after conversion is sent to cabin unit B's
Communication equipment；
S7. the communication equipment of cabin unit B receives message.
Further, the communication equipment of the communication equipment of cabin unit A and cabin unit B private network IP having the same
Location.
Further, pass through ASIC (Application Specific Integrated in setting ETBN
Circuit, specific integrated circuit) chip ACL (Access Control List, accesses control list) rule, from the end ECN
The IP packet that mouth enters asic chip is forwarded to the port F1, and into FPGA, (Field-Programmable Gate Array shows
Field programmable gate array) it handles, after FPGA carries out message NAT conversion, enter asic chip from the port F2, asic chip is according to road
By list item, determines the port ETB of message forwarding and E-Packet.
By adopting the above technical scheme, the present invention has the advantages that：
Significant improvement is carried out on the basis of IEC61375 protocol suite, the overall situation is calculated using the method for train absolute position
IP address greatlies simplify access rule, and carries out communication optimization.
Message NAT due to be related to message content conversion, need to modify message field (MFLD) and recalculate verification and, therefore, mesh
Preceding existing NAT conversion is largely using software conversion regime, i.e. CPU receives message, according to the conversion of NAT rule and then
The message is issued by CPU.The shortcomings that this mode is that conversion rate is slower, and it is larger to be delayed, and usual software NAT conversion rate exists
10M is hereinafter, convert time delay at 1 millisecond or more.Present invention employs hardware FPGA schemes to carry out NAT address conversion, conversion rate
Reach 90M or more, converts time delay in 50 microseconds hereinafter, greatly improving NAT conversion performance.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is that terminal message of the invention passes through switch processes schematic diagram.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It is carried out specifically by taking the communication process between two cabin units as an example in the present embodiment, cabin unit：Unit one,
Unit two calculate the connection relationship between the multiple cabin unit ETBN of train using IEC61375-2-5 agreement, tie according to calculating
Fruit, so that each ETBN is arranged successively and distributes network segment, such as a unit ETBN (10.128.64.1), two unit ETBN
(10.128.128.1)；The IP address of the network equipment of two unit subordinaties is identical, such as the CCU_IP=of two units
10.1.0.100.Assuming that a unit CCU (abbreviation CCU_U1) needs to carry out IP packet communication with two units (abbreviation CCU_U2), lead to
Letter process is as follows：
(1) CCU_U1 sends DNS request message to ETBN, requests the IP address of CCU_U2；
(2) it is 10.128.128.100 that ETBN, which returns to the IP address of CCU_U2,；
(3) CCU_U1 sends IP packet, source IP 10.1.0.100, destination IP 10.128.128.100 to ETBN；
After (4) one unit ETBN receive message, NAT address conversion is carried out, source IP is revised as 10.128.128.100,
Destination IP remains unchanged；Message after NAT is converted is sent to two unit ETBN；
After (5) two unit ETBN receive message, NAT address conversion is carried out, destination IP is revised as 10.1.0.100, source
IP is remained unchanged；Message after NAT is converted is sent to CCU_U2；
(6) after CCU_U2 receives message, if necessary to reply message, the process flow and request message of message are replied
Process is similar, and the source IP of returned packet is 10.1.0.100, destination IP 10.128.64.100.
As shown in Figure 1, the specific implementation step of homogeneous network communication means of the invention is as follows：
(1) connection relationship between the multiple unit ETBN of train is calculated using IEC61375-2-5 agreement, is tied according to calculating
Fruit makes each ETBN be arranged successively (abbreviation ETBN_TU1, ETBN_TU2...), and wherein ETBN number is TUx；
(2) XML configuration file, initialization terminal private network IP, it is ensured that each terminal has unique private network in this unit are loaded
IP；
(3) network segment is distributed to ETBN, network segment allocation rule is as follows：ETBN network segment=10.128.0.0+ (TUx<<18)；
(4) VLAN 1 is created, includes the port ETB1, the port ETB2, the port F2；
(5) VLAN 492 is created, includes the port ETB1, the port ETB2；
(6) VLAN 1001 is created, includes the port ECN, cpu port, the port F1
(7) acl rule 1 is created：
If (MuIP &255.255.192.0) is equal to this ETBN network segment, then is forwarded to the port F2；
(8) acl rule 2 is created：
If (MuIP &255.255.192.0) is not equal to this ETBN network segment, then is forwarded to the port F1；
(9) FPGA transformation rule 1：
If (MuIP &255.255.192.0) is equal to this ETBN network segment, then destination IP=10.1.0.0+ message destination IP
Low 14；It is forwarded to the port F1 simultaneously；
(10) FPGA transformation rule 2：
If (MuIP &255.255.192.0) is not equal to this ETBN network segment, then source IP=10.128.0.0+ message source IP
Low 14；It is forwarded to the port F2 simultaneously.
In Fig. 1 1. -8. characterize is processing sequence that message is sent to ETBN_TU2 from ETBN_TU1.By the way that ETBN is arranged
The acl rule of middle asic chip, the IP packet for entering asic chip from the port ECN are forwarded to the port F1, handle into FPGA,
After FPGA carries out message NAT conversion, enter asic chip from the port F2, asic chip determines the end message ETB according to route table items
Mouthfuls 2 forwardings and E-Packet.
The present invention calculates global ip address using train absolute position method, greatlies simplify access rule.
Message NAT due to be related to message content conversion, need to modify message field (MFLD) and recalculate verification and, therefore, mesh
Preceding existing NAT conversion is largely using software conversion regime, i.e. CPU receives message, according to the conversion of NAT rule and then
The message is issued by CPU.The shortcomings that this mode is that conversion rate is slower, and it is larger to be delayed, and usual software NAT conversion rate exists
10M is hereinafter, convert time delay at 1 millisecond or more.Present invention employs hardware FPGA schemes to carry out NAT address conversion, conversion rate
Reach 90M or more, converts time delay in 50 microseconds hereinafter, greatly improving NAT conversion performance.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (3)
1. a kind of homogeneous network communication means, which is characterized in that the communication means includes：
S1. the connection relationship between the multiple cabin unit ETBN of train is calculated using IEC61375-2-5 agreement, is tied according to calculating
Fruit, so that each ETBN is arranged successively and distributes network segment；
S2. wherein the communication equipment of cabin unit A requests the communication of purpose cabin unit B to its ETBN transmission DNS request message
The global ip address of equipment includes in the global ip address：The communication of the ETBN network segment and cabin unit B of cabin unit B is set
Standby host bit；
S3.ETBN feeds back the global ip address of the communication equipment of cabin unit B；
S4. the communication equipment of cabin unit A sends IP packet to its ETBN, and source IP is the private network IP address of the communication equipment, mesh
IP be cabin unit B communication equipment global ip address；
S5. after the ETBN of cabin unit A receives message, NAT address conversion is carried out, the source IP of message is revised as cabin unit
The global ip address of the communication equipment of B, destination IP remain unchanged, and the message after conversion is sent to the ETBN of cabin unit B；
S6. after the ETBN of cabin unit B receives message, NAT address conversion is carried out, the destination IP of message is revised as compartment list
The private network IP address of the communication equipment of first B, source IP remain unchanged, and the message after conversion is sent to the communication of cabin unit B
Equipment；
S7. the communication equipment of cabin unit B receives message.
2. communication means as described in claim 1, which is characterized in that the communication equipment of cabin unit A and leading to for cabin unit B
Believe equipment private network IP address having the same.
3. communication means as described in claim 1, which is characterized in that by the way that the acl rule of asic chip in ETBN is arranged, from
The IP packet that the port ECN enters asic chip is forwarded to the port F1, into FPGA processing, after FPGA carries out message NAT conversion, from
The port F2 enters asic chip, and asic chip determines the port ETB of message forwarding and E-Packet according to route table items.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592915.4A CN108881511A (en) | 2018-06-11 | 2018-06-11 | A kind of homogeneous network communication means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810592915.4A CN108881511A (en) | 2018-06-11 | 2018-06-11 | A kind of homogeneous network communication means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108881511A true CN108881511A (en) | 2018-11-23 |
Family
ID=64338710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810592915.4A Withdrawn CN108881511A (en) | 2018-06-11 | 2018-06-11 | A kind of homogeneous network communication means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108881511A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391566A (en) * | 2019-01-08 | 2019-02-26 | 广州众志诚信息科技有限公司 | ETBN backbone switches core board, control method and device |
| CN111083029A (en) * | 2019-11-28 | 2020-04-28 | 株洲中车时代软件技术有限公司 | Train Ethernet-based cross-marshalling data transmission method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050086373A1 (en) * | 2003-10-16 | 2005-04-21 | International Business Machines Corporation | Accessing data processing systems behind a NAT enabled network |
| CN103561131A (en) * | 2013-11-11 | 2014-02-05 | 南车株洲电力机车研究所有限公司 | Vehicle-mounted equipment real-time addressing method and system based on Ethernet |
| CN103905579A (en) * | 2012-12-28 | 2014-07-02 | 中国移动通信集团公司 | Method and system for communication between platform and terminal, platform and relevant devices |
| CN106627597A (en) * | 2017-01-04 | 2017-05-10 | 中车青岛四方机车车辆股份有限公司 | Railway vehicle marshalling method and device |
-
2018
- 2018-06-11 CN CN201810592915.4A patent/CN108881511A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050086373A1 (en) * | 2003-10-16 | 2005-04-21 | International Business Machines Corporation | Accessing data processing systems behind a NAT enabled network |
| CN103905579A (en) * | 2012-12-28 | 2014-07-02 | 中国移动通信集团公司 | Method and system for communication between platform and terminal, platform and relevant devices |
| CN103561131A (en) * | 2013-11-11 | 2014-02-05 | 南车株洲电力机车研究所有限公司 | Vehicle-mounted equipment real-time addressing method and system based on Ethernet |
| CN106627597A (en) * | 2017-01-04 | 2017-05-10 | 中车青岛四方机车车辆股份有限公司 | Railway vehicle marshalling method and device |
Non-Patent Citations (2)
| Title |
|---|
| 岳丽全等: "基于ETB的列车通信网编址和寻址方法", 《计算机应用》 * |
| 汪顺德等: "基于ETB列车网络地址转换方法研究", 《铁道机车车辆》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391566A (en) * | 2019-01-08 | 2019-02-26 | 广州众志诚信息科技有限公司 | ETBN backbone switches core board, control method and device |
| CN111083029A (en) * | 2019-11-28 | 2020-04-28 | 株洲中车时代软件技术有限公司 | Train Ethernet-based cross-marshalling data transmission method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10615997B2 (en) | In-vehicle gateway device | |
| US10110490B2 (en) | Method and apparatus for forwarding packet | |
| CN107465590A (en) | Network infrastructure system, the method for route network traffic and computer-readable medium | |
| US9565034B2 (en) | System and method for scalable inter-domain overlay networking | |
| CN107733795B (en) | Ethernet virtual private network EVPN and public network intercommunication method and device | |
| JP6353377B2 (en) | Railway vehicle network system | |
| US9900238B2 (en) | Overlay network-based original packet flow mapping apparatus and method therefor | |
| US20020184388A1 (en) | Layered approach to virtual private routing | |
| EP2596603B1 (en) | Ethernet switch and method for routing ethernet data packets | |
| CN109327374B (en) | System and method for realizing three-layer VPN network access | |
| CN106921573B (en) | NVo3 method and device for issuing tenant route in network | |
| CN108881511A (en) | A kind of homogeneous network communication means | |
| CN108512755B (en) | Method and device for learning routing information | |
| JP6323444B2 (en) | COMMUNICATION SYSTEM, CONTROL DEVICE, COMMUNICATION METHOD, AND PROGRAM | |
| CN105933235B (en) | Data communications method and device | |
| US20160127229A1 (en) | Packet data routing | |
| CN108696370A (en) | A kind of server and business-binding reconciliation binding method, apparatus and system | |
| US10382330B2 (en) | System for the routing of data to computer networks | |
| CN103873372B (en) | Policy-routing system based on domain name and method to set up | |
| CN106034079B (en) | A kind of method for configuring route, service routing method and core router | |
| CN109729010B (en) | Method, equipment and system for determining traffic transmission path in network | |
| CN109218191B (en) | System and method for enabling multicast packets to traverse non-multicast networks | |
| WO2006098043A1 (en) | Network system and network connection device | |
| JP2015231212A (en) | Data transfer system, data transfer server, data transfer method, and program | |
| CN108881510A (en) | A kind of homogeneous network domain name management method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181123 |
|
| WW01 | Invention patent application withdrawn after publication |